What type of mode caused the wound in Case 2 during the orthopedic surgery?

The correct answer is monopolar mode. In orthopedic surgery, monopolar mode is often used for cutting and coagulating tissue. This method relies on a single electrode that delivers a high-frequency electrical signal to the tissue, which can create a thermal effect. The electrical current flows from the active electrode to the patient and then to a grounding pad, making it effective for precision surgical tasks, such as incising or coagulating during operations.

In the context of the case, if a wound resulted from the application of energy via monopolar mode, it indicates that the technique was used in a way that potentially caused tissue damage, either through excessive heat or unintended application. This mode is particularly relevant in surgeries where precision is essential, and it can sometimes lead to complications if not used correctly.